1dnm

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Template:STRUCTURE 1dnm

CRYSTAL STRUCTURE AND SEQUENCE-DEPENDENT CONFORMATION OF THE A.G MIS-PAIRED OLIGONUCLEOTIDE D(CGCAAGCTGGCG)


Overview

The crystal structure of the dodecanucleotide d(CGCAAGCTGGCG) has been determined to a resolution of 2.5 A and refined to an R factor of 19.3% for 1710 reflections. The sequence crystallizes as a B-type double helix, with two G(anti).A(syn) base pairs. These are stabilized by three-center hydrogen bonds to pyrimidines that induce perturbations in base-pair geometry. The central AGCT region of the helix has a wide (greater than 6 A) minor groove.

About this Structure

Full crystallographic information is available from OCA.

Reference

Crystal structure and sequence-dependent conformation of the A.G mispaired oligonucleotide d(CGCAAGCTGGCG)., Webster GD, Sanderson MR, Skelly JV, Neidle S, Swann PF, Li BF, Tickle IJ, Proc Natl Acad Sci U S A. 1990 Sep;87(17):6693-7. PMID:2395870 Page seeded by OCA on Fri May 2 14:03:21 2008

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